Characterization of atmospheric aerosols for a long range transport of biomass burning particles from Canadian forest fires over the southern Iberian Peninsula in July 2013

Ortiz‐Amezcua P., Guerrero‐Rascado JL., Granados‐Muñoz M.J., Bravo‐Aranda J.A. and Alados‐Arboledas L.

Óptica Pura y Aplicada

47(1), 2014, 43-49, 10.7149/OPA.47.1.43

This work presents the characterization of aerosols during a special episode of long-range transported biomass burning particles from Canadian forest fires. This event was detected at the EARLINET Granada station (37.16° N, 3.61° W, 680 m asl) from 11ᵗʰ to 17ᵗʰ July 2013, and also over other EARLINET stations. Different techniques, covering active/passive and ground based/satellite ones, have been used. In particular, the study has involved processing of both Raman and elastic lidar signals and sun-photometer AERONET data. Furthermore, modeling tools as HYSPLIT, NAAPS and BSC-DREAM8b have been used to understand the synoptic behavior of the aerosol plumes. The results highlight the presence of a multilayered structure showing large backscatter-related Angstrom Exponent (around 2) and very low particle linear depolarization (less than 0.04) at layers around 5-6 km (asl) which means considerably small and spherical particles. During the strongest period, on 14ᵗʰ July, aerosol backscatter values up to 2.9×10ˉ⁶ (m sr) ˉ¹ at 532 nm were detected in this layer.